304 Stainless Steel Pipe End Cap — Welded Fitting Φ19–219mm

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304 Stainless Steel Pipe End Cap — Welded Fitting Φ19–219mm

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Diameter X Wall Thickness: 19 x 1.5mm

Pack Quantity: 1 Pcs

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$3.52 USD

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304 Stainless Steel Pipe End Cap — Seal Any Pipe End Cleanly and Permanently

When a pipe run ends without a proper cap, you risk leaks, contamination, and failed inspections — whether you're a plumber finishing a water line, a fabricator capping structural tube, or a DIYer sealing off a gas or oil branch. These 304 stainless steel welded pipe end caps give you a clean, permanent solution that holds up under pressure and resists corrosion over time.

Each cap is a single-piece butt-weld fitting machined from 304 stainless steel, available in outer diameters from 19mm (≈3/4") to 219mm (≈8-5/8") and wall thicknesses from 1.5mm to 5mm. Select your pack quantity — 1, 2, or 3 pieces — to match your project needs. The smooth domed end profile provides even stress distribution and a consistent weld surface.

These caps are well-suited for residential and commercial plumbing where a water or gas branch needs to be terminated, for industrial fluid systems carrying oil or process fluids, and for structural tube fabrication where open tube ends need to be closed for aesthetics or safety. Common long-tail search scenarios include capping stainless steel round tube ends, sealing schedule 10S pipe terminations, and closing off HVAC or compressed-air line branches.

🔗 Compatibility: Designed for butt-weld installation on metric round stainless steel pipe and tube. Match the cap's outer diameter to your pipe's outer diameter. Compatible with Schedule 5S / 10S stainless pipe in corresponding OD sizes. Verify your pipe OD before ordering.

⚠️ Note: Wall thickness affects pressure rating. For high-pressure gas, oil, or steam lines, select a wall thickness that meets or exceeds your system's requirements and have installation performed by a qualified welder.

✅ Key Features of These 304 Stainless Steel Pipe End Caps

🔩Butt-Weld Design — Flat-face butt-weld end that sits flush against the pipe for full-penetration TIG or MIG welding, creating a leak-free seal on water, gas, and oil lines.
🛡️304 Stainless Steel Construction — Resists rust, atmospheric corrosion, and mild chemical exposure; suitable for both indoor plumbing and outdoor pipe termination applications.
📏Wide Size Range — Outer diameters from 19mm (≈3/4") to 219mm (≈8-5/8") with wall thicknesses from 1.5mm to 5mm, covering small residential tube caps through large industrial pipe end closures.
⚖️Multiple Wall Thickness Options — Choose 1.5–2mm for light-duty or decorative capping, or 3–5mm for higher-pressure systems and heavy-duty stainless pipe end cap applications.
📦Flexible Pack Quantities — Available in 1, 2, or 3-piece packs so you can order exactly what your job requires without overstocking or making multiple orders.
🏭Smooth Domed Profile — The rounded end cap geometry distributes internal pressure evenly, reducing stress concentration at the weld joint in pressurized stainless steel pipe fitting assemblies.

📐 Technical Specifications — 304 Stainless Steel Welded Pipe End Caps

Material	304 Stainless Steel (UNS S30400)
Type	Butt-Weld Pipe End Cap
Outer Diameter Range	19mm (≈3/4") – 219mm (≈8-5/8")
Wall Thickness Options	1.5mm / 2mm / 3mm / 4mm / 5mm (see variant options)
Pack Quantity Options	1 Pcs / 2 Pcs / 3 Pcs
End Profile	Domed / Rounded
Installation Method	Butt-Weld (TIG or MIG)
Compatible Pipe Standards	Metric round tube; generally Schedule 5S / 10S stainless pipe
Applicable Media	Water, Gas, Oil, Air (verify pressure rating for your application)
Surface Finish	Mill finish (contact us to confirm)
Pressure Rating	See variant options — depends on OD and wall thickness
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right pipe end cap size?

Match the outer diameter (OD) of the cap to the outer diameter of your pipe. For example, a 19mm (≈3/4") cap fits a pipe with a 19mm OD. Wall thickness should generally match or exceed your pipe wall — thicker walls (3mm+) are typically used for higher-pressure or structural applications. If you are unsure, contact us to confirm before ordering.

What pressure can these end caps handle?

Pressure rating depends on the outer diameter and wall thickness of the specific variant. Thicker-wall caps (3–5mm) generally support higher working pressures. For critical pressure applications, please confirm the rated working pressure with your system engineer or contact us to confirm the specification for your chosen size.

Are these end caps suitable for outdoor or corrosive environments?

Yes. 304 stainless steel offers good resistance to atmospheric corrosion, moisture, and many mild chemicals, making it generally suitable for outdoor pipe termination and light industrial environments. For highly corrosive or marine environments, 316 stainless steel is typically recommended instead.

What pipe standards are these caps compatible with?

These caps are dimensioned by outer diameter and wall thickness, making them compatible with standard metric round tube and pipe. They are generally suitable for use with Schedule 5S and Schedule 10S stainless steel pipe in the corresponding OD sizes. Always verify your pipe's OD before ordering to ensure a proper fit-up for welding.

Can these caps be used for water, gas, and oil lines?

Yes. These welded pipe end caps are designed for sealing water, gas, and oil pipelines. They are commonly used in plumbing, HVAC, and light industrial fluid systems. For high-pressure gas or fuel lines, always verify the wall thickness and have a qualified professional perform the weld to ensure a leak-free, code-compliant installation.

How are these end caps installed?

These are butt-weld end caps. They are placed over the open end of a pipe and welded in place using TIG or MIG welding. No threads are required. Proper fit-up and weld penetration are important for a leak-free seal, especially in pressurized systems. In most cases, a small gap (root gap) is left for full-penetration welding.

What is the difference between 1.5mm and 3mm wall thickness caps?

Thinner walls (1.5–2mm) are typically used for low-pressure fluid lines, decorative tube capping, and light structural applications. Thicker walls (3–5mm) are generally chosen for higher-pressure systems, heavy-duty industrial piping, or where additional structural strength is needed at the pipe end. When in doubt, choose the thicker option for safety margin.

🛒 Select your diameter, wall thickness, and pack quantity above, then add to cart — ships from our US warehouse.

304 Stainless Steel Pipe End Cap — Welded Fitting Φ19–219mm

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Beschreibung

304 Stainless Steel Pipe End Cap — Seal Any Pipe End Cleanly and Permanently

✅ Key Features of These 304 Stainless Steel Pipe End Caps

📐 Technical Specifications — 304 Stainless Steel Welded Pipe End Caps

❓ Frequently Asked Questions

304 Stainless Steel Pipe End Cap — Welded Fitting Φ19–219mm

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